Diagnosis of Gestational Diabetes Mellitus with Point-of-Care Methods for Glucose versus Hospital Laboratory Method Using Isotope Dilution Gas Chromatography-Mass Spectrometry as Reference

Table 2

Comparison of abnormal test results between each method and the reference method.

	Fasting ()	2 h ()	Fasting and/or 2 h ()	1 h ()	Fasting and/or 1 h ()	Overall^a ()
ID GC-MS	45 (33)	71 (54)	86 (65)	24 (47)	28 (55)	35 (70)
HC201+	64 (47)	89 (66)	108 (80)	34 (67)	36 (71)	44 (85)
HC201RT	41 (30)	69 (51)	82 (61)	22 (43)	27 (53)	35 (67)
CL	75 (56)	86 (64)	107 (80)	38 (73)	42 (81)	45 (87)

Data are (%). Fasting cut-off of ≥5.1 mmol/L; 1 h cut-off of ≥10 mmol/L; 2 h cut-off of ≥8.5 mmol/L. ^aFasting and/or 1 h and/or 2 h. , , and compared to ID GC-MS (McNemar test for correlated proportions using Bonferroni correction). Missing values were below 4% for all measurements. CL: central laboratory; HC201+: HemoCue 201+; HC201RT: HemoCue 201 RT; ID GC-MS: isotope dilution gas chromatography-mass spectrometry.